//
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//

#if not defined(__APPLE__)
    #if defined(_WIN32)
        #include <windows.h>
    #endif
    #include <GL/glew.h>
#else
    #include <OpenGL/gl3.h>
#endif

#include "../osd/glslComputeController.h"
#include "../osd/glslComputeContext.h"
#include "../osd/glslDispatcher.h"
#include "../osd/glslKernelBundle.h"

#include <algorithm>
#include <cassert>

namespace OpenSubdiv {
namespace OPENSUBDIV_VERSION {

OsdGLSLComputeController::OsdGLSLComputeController() {
}

OsdGLSLComputeController::~OsdGLSLComputeController() {

    for (std::vector<OsdGLSLComputeKernelBundle*>::iterator it =
             _kernelRegistry.begin();
         it != _kernelRegistry.end(); ++it) {
        delete *it;
    }
}

void
OsdGLSLComputeController::Synchronize() {

    glFinish();
}

OsdGLSLComputeKernelBundle *
OsdGLSLComputeController::getKernels(int numVertexElements,
                                     int numVaryingElements) {

    std::vector<OsdGLSLComputeKernelBundle*>::iterator it =
        std::find_if(_kernelRegistry.begin(), _kernelRegistry.end(),
                     OsdGLSLComputeKernelBundle::Match(numVertexElements,
                                                numVaryingElements));
    if (it != _kernelRegistry.end()) {
        return *it;
    } else {
        OsdGLSLComputeKernelBundle *kernelBundle =
            new OsdGLSLComputeKernelBundle();
        _kernelRegistry.push_back(kernelBundle);
        kernelBundle->Compile(numVertexElements, numVaryingElements);
        return kernelBundle;
    }
}

}  // end namespace OPENSUBDIV_VERSION
}  // end namespace OpenSubdiv